Ventilator for cars.



, PatentedJune-IZ. |900. E. H. JUHNSTDN. VENTILATOR FOB DASS.

(Application filed Nov. 10, 1899.)

(No Model.)

THE' Nonms PETERS no.. PHoTo-LITNQ. wusmmcouA n. c.

NITED STATES PATENT Erica.

EDIVARD H. JOHNSTON, OF PHILADELPHIA, PENNSYLVANIA.l

VENTlL'ATOR FOR CARSV.

SPECIFICATION forming pareof letters; raten/G No. 651,627, dated June12, 1900.

,Application ined November 1Q,1e99. serai No. 736.461. er@ miei.) l

1'0 all whom t 11e/ty concern: Y

Beit lmownthat I, EDWARD H. JOHNSTON, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvementin Ventilators for Cars, duc.,which improvement is fully set forth in the following specification andaccompanying drawings.

My invention consists of a ventilator-for a car or other vehiclecomposed of a fan, a wheel operating the same, a chest into which windis ad-mitted and by which it is directed to said wheel, means forcontrolling the running of the fan, andball-bearings for the fanshaft,whereby the latter rotates with ,ease and smoothness, said ball-bearingbeing seat-- ed in the collar or sleeve in which the shaft of said-fanand wheel is mounted on rings, which are iitted in said collar andretained by nuts or appliances on said shaft.

Figure l represents a partial side elevation and partial Verticalsection of a ventilator embodying my invention. Fig. 2 represents anirregular horizontal section on line x az, Fig. l. Fig. 3 represents aperspective View of a detached portion. l Figs. 4 and 5 representhorizontal and vertical sections,enlarged, respectively, on lines and3'/ y, Fig. l.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a case or chest which issupported on a suitable portion of the roof of a car or other vehicleand formed with chutes B B, which project in opposite directions and areopen to the atmosphere, so as to admit a current of air into and throughthe chest.

C designates a wind-wheel which is located within the chest A andsecured to the shaft D, which passes vertically through the collar E andcarries at its lower end the blades F of a fan, said collar dependingfrom the plate G, which is secured below the chest A, in the presentbaseto the roof of the ca r, and provided with balls I-I, which are seatedbetween the innerends of rings .I and shoulders on the interior of thecollar opposite to said rings, the latter entering the upper and lowerends of said collar and being controlled and adjusted by the nuts orwashers K on said shaft D, respectively above and below said collar,

thus providing ball-bearings for said shaft, so that the latter runswith ease and smoothness in the collar.

The ohestA is provided with doors or valves L,the upper and lower endsof which are iitted in ways M in the upper and lower portions of thesides of said chestand so-arranged that they may cover or uncover theopenings N in said chest at the inner terminals of thecliutes B, bywhich provision the volume of air admitted int-o said chest maybeadjusted to full or par-A tial extcnt or be entirely cut off from the same. Owing to the ways M, rain, dust, dac., are prevented from beatingthrough-the chest at the. upper and lower ends of the doors Il. It willalso be noticed that the pinions W, as well as the racks V, are inclosedin said ways M, and thus guarded from rain, snow, or dust, dac., whilethe upper and low ends of the valves are also inclosed in said ways andsimilarly guarded.

Connected with the collar E is the hanger P, on which is mounted thelever Q, one end of which is connected with the rod R and the other endprovided with the shoe S, which is adapted to engage withk thefriction-pulley T,jthe latter being secured to the shaftD below thecollarE. The rodRis passed through the sleeve U, which is secured to thebody of the car and provided with a hand wheel or leverA whereby the rodmay be operated to raise or lower the lever Q, and consequently causethe shoe to disengage the friction-pulley, thus releasing the shaft andpermitting the rotation or operation of the fan or to engage therewith,thus acting as a brake to stop or control said shaft and prevent therotation and operation of the fan.

In order to move the valves or doors L, the same are provided withcircular racks V, with which engage the pinions W, which are connectedwith the shaft X, the latter being suitablymounted on the body of thecar and provided with a handle for rotating purposes, whereby the valvesmay be moved in oppositedirections, so as to close or open the chutes B,and thus adjust the volume of air desired to be admitted into the chestto operate the wind-wheel C, orthe air may be entirely cut oif, thusstopping said wheel, it being also 4evident that the rotation of theshaft D may be quickly and immediately prevented by the IOO engagementof the shoe with the friction-pnlley, the same also being adapted toadjust the rapidity of rotation of said shaft by the extent of frictionoccasioned by the shoe on said pulley. It will now be seen that when thecar is in motion and the parts are in operative position the fan will berotated, thus agitating the air in the ear, whereby the latter will becooled and ventilated and the foul air displaced.

The chutes are disposed opposite to each other, and they extendtangentially from the vehestA, whereby the fan will rotate in the samedirection regardless of the direction of motion of the car.

In order to conveniently operate the lever Q., the lower portion of therod R is held within the sleeve U by means of the collars or washers Yabove and below the same, forming somewhat of a swivel, so that said rodmay be rotated without being raised and lowered. The upper end of saidrod is screw-threaded and fitted in a threaded opening in the block Z,on which the adjacent end of the lever Q is mounted by the journals orpivots Z', it being evident that by operating the rod R the block Z mayhave up or down motions imparted to it, the same being imparted to saidlever, the effect of which on the shoe S being evident, while the rodretains either of its positions without the requirement of fasteningdevices.

Having thus described my invention, what I claim as new, and ,desire tosecure by Letters Patent, is-

l. A shaft, a wind-wheel and a fan respectively on opposite ends of saidshaft, in combination with a vertically-arranged collar with shoulderedrecesses in the upper and lower ends thereof, rings entering saidrecesses and seated against said eollar,and balls interposed betweensaid rings and collar, said shaft being mounted in said collar andrings, a supporting device forsaid collar, and nuts 011 said shaft atthe opposite ends of said collar, bearing directly against said rings.

2. In a ventilator of the character stated, the combination with thewind-chest thereof, and an inlet thereon, of a valve for said inletmounted on the wind-chest, a rack on said valve, a pinion meshing withsaid rack, a shaft carrying said pinion, a bearing for said shaft, andways on said chest freely receiving and guarding the `upper and lowerends of said valve, said pinion, rack andv the upper and lower ends ofsaid valve being inclosed in said ways respectively.

3. A wind-chest, a wind-wheel therein, a fan, a rotary shaft, tbe lattercarrying said wheel and fan, and a friction-pulley on said shaft, incombination with a lever, a brakeshoe on one end of said lever, the samebeing adapted to engage said pulley, a bearing for said lever, arising-and-falling block with a threaded opening, the other end of saidlever being pivotally connected with said block, an operating-rod, and asleeve in which said rod is swiveled, a portion of said rod beingscrew-threaded and engaging the thread of the opening of said bleek.

EDWARD lll. JOHNSTON.

Vitnesses:

.Toi-1N A. WIEDnnsnnIM, WM. GANER Wrnnnnsnnm.

